Margot Robbie reveals her toughest role yet

AUSSIE actor Margot Robbie has revealed she had "tears streaming down my face" behind the scenes of her role as ice queen Tonya Harding.

The 27-year-old told W Magazine she did not realise the pain that came along with figure skating.

"I did four months of training, five days a week, four hours a day. On Christmas Eve, I was at the rink. And now I actually really miss it," she said.

"I kept my ice skates - but I said goodbye to a whole world of pain that I didn't realise came along with figure skating."

"There's no padding when you hit the ice. Our choreographer was never sympathetic. When I fell, she was like, 'Come on, get up. Let's go.' One time I had a huge fall, and she said, 'That was a real skater fall, and you can have a minute.' I was so proud, with tears streaming down my face."

Kerrigan was clubbed in the knee in 1994 - just one month before the Winter Olympics - leaving her unable to compete.

It was later revealed that Harding's ex-husband, Jeff Gillooly, and her bodyguard engineered the attack. Harding long denied her involvement but was eventually convicted of hindering the investigation into the incident.

She received three years' probation, 500 hours of community service, and a $160,000 fine - and was ultimately banned from the US Figure Skating Association for life.